CN116412002A - Wide sliding pressure operation air turbine system and operation mode thereof - Google Patents
Wide sliding pressure operation air turbine system and operation mode thereof Download PDFInfo
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- CN116412002A CN116412002A CN202310396107.1A CN202310396107A CN116412002A CN 116412002 A CN116412002 A CN 116412002A CN 202310396107 A CN202310396107 A CN 202310396107A CN 116412002 A CN116412002 A CN 116412002A
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- 230000001502 supplementing effect Effects 0.000 claims abstract description 74
- 230000001105 regulatory effect Effects 0.000 claims abstract description 30
- 238000003303 reheating Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 238000004146 energy storage Methods 0.000 abstract description 8
- 238000010248 power generation Methods 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
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- Engineering & Computer Science (AREA)
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Abstract
The invention relates to the technical field of air energy storage, in particular to an air turbine system operated under wide sliding pressure, which comprises a first section turbine, a second section turbine and a high-pressure air inlet pipeline, wherein the exhaust gas of the first section turbine is introduced into the second section turbine to do work, a high-pressure main valve and a high-pressure regulating valve are arranged on the high-pressure air inlet pipeline, a first air supplementing pipeline leading to a first air supplementing port on the first section turbine and a second air supplementing pipeline leading to a second air supplementing port on the second section turbine are arranged between the high-pressure main valve and the high-pressure regulating valve, the first air supplementing pipeline is provided with a first air supplementing valve, and the second air supplementing pipeline is provided with a second air supplementing valve. The operation mode of the air turbine system is mainly characterized in that the opening sizes of the high-pressure regulating valve, the first air compensating valve and the second air compensating valve are correspondingly adjusted along with the pressure reduction of high-pressure air inlet, so that the air turbine system can continuously and efficiently generate rated power in the whole operation process, and the rated power can be generated in a wide pressure operation range in a high efficiency mode.
Description
Technical Field
The invention relates to the technical field of air energy storage, in particular to an air turbine system running under a wide sliding pressure and an operation mode of the air turbine system running under the wide sliding pressure.
Background
The compressed air energy storage system is a novel large-scale energy storage technology, and the technology is characterized in that gas is compressed into salt caves or storage tanks through electric wave valleys for a power grid, and released to supply air turbines for power generation when the power grid is in a peak power consumption state, so that the power grid regulation capacity and the new energy consumption capacity are improved. The compressed air storage device is typically a salt cavern or a storage tank. In the process of doing work by the air turbine, the pressure of gas in the salt cavern or the storage tank is continuously reduced, so that rated power generation can be guaranteed to be generated at any air inlet pressure point, and after the pressure of the air is reduced to a certain extent, an air supplementing valve is required to be opened at the air supplementing point to supplement air in one way to the middle stage of the air turbine. However, when the air turbine is operated in a wide pressure operation range (the difference between the highest air inlet pressure and the lowest air inlet pressure is more than 4 MPa), the air supplementing quantity of one path needs to be particularly large, so that the efficiency of the air turbine is obviously reduced, and the overall efficiency of compressed air energy storage is reduced.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide an air turbine system operating at a wide sliding pressure and an operating mode of the air turbine system operating at a wide sliding pressure, which are capable of efficiently generating rated power in a wide pressure operating range.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides an air turbine system with wide sliding pressure operation, which comprises a first section turbine, a second section turbine and a high-pressure air inlet pipeline for conveying high-pressure air to an air inlet of the first section turbine, wherein exhaust gas of the first section turbine is introduced into the second section turbine to do work, the first section turbine is provided with a first air compensating opening, the second section turbine is provided with a second air compensating opening, a high-pressure main valve and a high-pressure regulating valve which are sequentially arranged along the direction of high-pressure air inlet airflow are arranged on the high-pressure air inlet pipeline, a first air compensating pipeline for connecting the high-pressure air inlet pipeline with the first air compensating opening and a second air compensating pipeline for connecting the high-pressure air inlet pipeline with the second air compensating opening are arranged between the high-pressure main valve and the high-pressure regulating valve, the first air compensating pipeline is provided with a first air compensating valve, and the second air compensating pipeline is provided with a second air compensating valve.
Preferably, the first turbine section and the second turbine section are of a cylinder combination structure.
Preferably, the first section turbine and the second section turbine are of a cylinder separating structure, and an exhaust port of the first section turbine is connected with an air inlet of the second section turbine through a reheating pipeline.
Preferably, the reheat pipe is provided with a heat exchanger.
Preferably, during operation of the wide-slip pressure operating air turbine system, the pressure of the high-pressure intake air is gradually reduced from the highest pressure to the lowest pressure, and the difference between the highest pressure and the lowest pressure is not less than 4MPa.
The invention also provides an operation mode of the air turbine system with the wide sliding pressure operation, wherein in the operation process of the air turbine system with the wide sliding pressure operation, the pressure of high-pressure air inlet is gradually reduced to the lowest pressure P4 from the highest pressure P0 through a first pressure supplementing pressure point P1, a second pressure supplementing pressure point P2 and a critical pressure point P3 in sequence, and the operation mode of the air turbine system with the wide sliding pressure operation is as follows: the high-pressure main valve is kept fully opened; in the operation stage that the pressure of the high-pressure air inlet is reduced from the highest pressure P0 to the first air supplementing pressure point P1, the high-pressure regulating valve is opened, the opening degree is gradually increased to be fully opened along with the pressure reduction of the high-pressure air inlet, and the first air supplementing valve and the second air supplementing valve are kept closed; in the operation stage that the pressure of the high-pressure air inlet is reduced from the first air supplementing pressure point P1 to the second air supplementing pressure point P2, the high-pressure air regulating valve is kept fully opened, the first air supplementing valve is opened and gradually increases the opening degree to fully opened along with the reduction of the pressure of the high-pressure air inlet, and the second air supplementing valve is kept closed; in the operation stage that the pressure of the high-pressure air inlet is reduced from a second air supplementing pressure point P2 to a critical pressure point P3, the high-pressure regulating valve and the first air supplementing valve are kept fully open, the second air supplementing valve is opened and gradually increases the opening degree along with the reduction of the pressure of the high-pressure air inlet, and when the pressure of the high-pressure air inlet reaches the critical pressure point P3, the through-flow pressure ratio in front of the first air supplementing port of the first-stage turbine reaches a critical value; in the operation stage that the pressure of the high-pressure air inlet is reduced from the critical pressure point P3 to the lowest pressure P4, the high-pressure regulating valve is kept fully open, the first air supplementing valve is gradually closed, the through-flow pressure ratio in front of the first air supplementing port of the first-stage turbine is not lower than the critical value, and the second air supplementing valve continuously increases the opening gradually along with the pressure reduction of the high-pressure air inlet.
Compared with the prior art, the invention has obvious progress:
according to the invention, the first air supplementing pipeline and the second air supplementing pipeline are respectively led to the first air supplementing port on the first section turbine and the second air supplementing port on the second section turbine, in the process that the pressure of high-pressure air inlet is gradually reduced from the highest pressure to the lowest pressure, the opening sizes of the high-pressure air regulating valve, the first air supplementing valve and the second air supplementing valve can be correspondingly adjusted along with the reduction of the pressure of the high-pressure air inlet by gradually opening the high-pressure air regulating valve, the first air supplementing valve and the second air supplementing valve, so that the air turbine system in wide sliding operation can continuously and efficiently generate rated power, no excessive power or little power in the operation process that the pressure of the whole high-pressure air inlet is gradually reduced, and the two air supplementing pipelines are arranged to supplement the air, so that the operation mode of the air turbine system in wide sliding operation is more flexible, and the rated power can be efficiently generated in the wide pressure operation range.
Drawings
FIG. 1 is a schematic illustration of a wide skid operating air turbine system in accordance with an embodiment of the present invention.
Wherein reference numerals are as follows:
1. first stage turbine
2. Second stage turbine
3. High-pressure main valve
4. High-pressure regulating door
5. First air compensating valve
6. Second air compensating valve
7. Heat exchanger
100. High-pressure air inlet pipeline
200. Reheat pipeline
300. First air supplementing pipeline
400. Second air supplementing pipeline
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to be limiting.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
As shown in FIG. 1, one embodiment of the wide skid operating air turbine system of the present invention.
The air turbine system with wide sliding pressure operation in this embodiment includes a first turbine section 1, a second turbine section 2, a high-pressure air inlet pipeline 100, a first air compensating pipeline 300, a second air compensating pipeline 400, a high-pressure main valve 3, a high-pressure regulating valve 4, a first air compensating valve 5 and a second air compensating valve 6.
The high-pressure air inlet pipeline 100 is connected with an air source and an air inlet of the first-stage turbine 1 to convey high-pressure air to the air inlet of the first-stage turbine 1, the high-pressure air flow does work through a through-flow area of the first-stage turbine 1, and exhaust of the first-stage turbine 1 after working through the through-flow area of the first-stage turbine 1 is led into the second-stage turbine 2 to do work. The air source may be compressed air stored by a compressed air energy storage system. In one embodiment, the first stage turbine 1 and the second stage turbine 2 may adopt a cylinder combination structure, that is, the first stage turbine 1 and the second stage turbine 2 are combined into one single cylinder. In another embodiment, the first stage turbine 1 and the second stage turbine 2 may adopt a cylinder-separating structure, that is, the first stage turbine 1 and the second stage turbine 2 are respectively a cylinder, the exhaust port of the first stage turbine 1 is connected with the air inlet of the second stage turbine 2 through a reheat pipeline 200, and the reheat pipeline 200 introduces the exhaust gas of the first stage turbine 1 into the second stage turbine 2 to perform work. Preferably, the reheating pipeline 200 can be provided with a heat exchanger 7, and the exhaust gas of the first-stage turbine 1 enters the reheating pipeline 200 and is heated by the heat exchanger 7 and then enters the second-stage turbine 2 to do work.
The first section turbine 1 is provided with a first air supplementing port, and the first air supplementing port is positioned at the middle stage of the through flow of the first section turbine 1. The second section turbine 2 is provided with a second air supplementing port, and the second air supplementing port is positioned at the inflow port or the intermediate stage of the second section turbine 2. The high-pressure main valve 3 and the high-pressure regulating valve 4 are both arranged on the high-pressure air inlet pipeline 100 and are sequentially arranged along the high-pressure air inlet airflow direction, and the first air supplementing pipeline 300 and the second air supplementing pipeline 400 are both arranged between the high-pressure main valve 3 and the high-pressure regulating valve 4. The first air supplementing pipeline 300 is connected with the high-pressure air inlet pipeline 100 and the first air supplementing port on the first section turbine 1, and the first air supplementing pipeline 300 is provided with a first air supplementing valve 5. The second air supplementing pipeline 400 is connected with the high-pressure air inlet pipeline 100 and a second air supplementing port on the second section turbine 2, and a second air supplementing valve 6 is arranged on the second air supplementing pipeline 400.
In operation, high-pressure intake air from an air source (compressed air energy storage system) enters the first-stage turbine 1 from the air inlet of the first-stage turbine 1 to do work through the high-pressure main valve 3 and the high-pressure regulating valve 4 on the high-pressure intake pipeline 100 and then enters the second-stage turbine 2 to continue doing work, or is discharged from the air outlet of the first-stage turbine 1 and enters the second-stage turbine 2 through the reheating pipeline 200 to continue doing work. The high-pressure main valve 3 is kept fully opened in the whole operation process and continuously intakes air; and the turbine is quickly closed at critical shutdown time to protect the turbine. In the operation process of the air turbine system with wide sliding pressure operation, the pressure of the high-pressure air inlet is gradually reduced from the highest pressure to the lowest pressure along with continuous acting of the turbine until the acting and power generation time is completed. The air turbine system with wide sliding pressure operation in this embodiment is provided with the first air compensating pipeline 300 and the second air compensating pipeline 400, which are respectively led to the first air compensating port on the first turbine section 1 and the second air compensating port on the second turbine section 2, and in the process that the pressure of the high-pressure air intake is gradually reduced from the highest pressure to the lowest pressure, the high-pressure regulating valve 4, the first air compensating valve 5 and the second air compensating valve 6 can be opened gradually in sequence, and the opening sizes of the high-pressure regulating valve 4, the first air compensating valve 5 and the second air compensating valve 6 can be correspondingly adjusted along with the pressure reduction of the high-pressure air intake, so that the air turbine system with wide sliding pressure operation can continuously and efficiently generate rated power, generate no excessive power or generate little power in the operation process that the pressure of the whole high-pressure air intake is gradually reduced, and the two ways of air compensating pipelines are arranged, so that the operation mode of the air turbine system with wide sliding pressure operation is more flexible, and the rated power generation can be realized in the wide pressure operation range.
In this embodiment, the difference between the highest pressure and the lowest pressure of the high-pressure intake air is not less than 4MPa.
It should be noted that the applicable media of the air turbine system with wide sliding pressure operation of the present embodiment is not limited to compressed air, and other media such as CO may be used 2 Or H 2 O or He, etc.
Based on the air turbine system running under the wide sliding pressure, the embodiment of the invention also provides an operation mode of the air turbine system running under the wide sliding pressure. In the operation process of the air turbine system with wide sliding pressure operation in this embodiment, the pressure of the high-pressure air intake gradually decreases from the highest pressure P0 to the lowest pressure P4 through the first pressure compensating pressure point P1, the second pressure compensating pressure point P2 and the critical pressure point P3 in sequence. The first air compensating pressure point P1 is a pressure point at which the first air compensating valve 5 is opened, and when the pressure of the high-pressure air intake falls to the first air compensating pressure point P1, the first air compensating valve 5 needs to be opened to ensure that the air turbine system running under wide sliding pressure generates rated power. The second air compensating pressure point P2 is a second air compensating valve 6 opening pressure point, when the pressure of the high-pressure air intake falls to the second air compensating pressure point P2, the second air compensating valve 6 needs to be opened to ensure that the air turbine system running at the wide sliding pressure generates rated power. The critical pressure point P3 is a closing pressure point of the first air compensating valve 5, when the pressure of the high-pressure intake air falls to the critical pressure point P3, the through-flow pressure ratio before the first air compensating port of the first stage turbine 1 reaches a critical value, and the first air compensating valve 5 needs to be closed so that the through-flow pressure ratio before the first air compensating port of the first stage turbine 1 is not lower than the critical value. The values of the highest pressure P0, the first pressure-compensating pressure point P1, the second pressure-compensating pressure point P2, the critical pressure point P3, and the lowest pressure P4 can be determined according to practical application situations. The operation mode of the air turbine system with wide sliding pressure operation in this embodiment is that, in the whole operation process, the high-pressure main valve 3 is kept fully open, if a critical shutdown time is met, the high-pressure main valve 3 is rapidly closed to protect the turbine, and the operation process of the air turbine system with wide sliding pressure operation is divided into the following four stages.
The first phase is an operation phase in which the pressure of the high-pressure intake air is reduced from the highest pressure P0 to the first air-supply pressure point P1, that is, an operation phase in which the pressure of the high-pressure intake air is higher than the first air-supply pressure point P1, the first phase is a throttle operation phase in which the high-pressure regulating valve 4 is opened and gradually increases in opening degree to full opening as the pressure of the high-pressure intake air is reduced, and both the first air-supply valve 5 and the second air-supply valve 6 remain closed. The opening of the high-pressure regulating valve 4 is correspondingly regulated according to the pressure reduction of the high-pressure air inlet, so that the air turbine system running under the wide sliding pressure is ensured to generate rated power.
The second stage is an operation stage in which the pressure of the high-pressure intake air is reduced from the first pressure compensating pressure point P1 to the second pressure compensating pressure point P2, that is, an operation stage in which the pressure of the high-pressure intake air is lower than the first pressure compensating pressure point P1 and higher than the second pressure compensating pressure point P2, the second stage is the high-pressure intake air and the first stage of the air compensating operation stage, in which the high-pressure regulating valve 4 is kept fully opened, the first air compensating valve 5 is opened and gradually increases in opening degree to fully opened as the pressure of the high-pressure intake air is reduced, and the second air compensating valve 6 is kept closed. The opening of the first air compensating valve 5 is correspondingly adjusted according to the pressure reduction of the high-pressure air inlet, so that the first-section air compensating flow gradually enters the through flow of the first-section turbine 1 from the first air compensating port on the first-section turbine 1 to do work through the first air compensating pipeline 300 and the first air compensating valve 5, and the first-section air compensating flow gradually increases, and the air turbine system running under wide sliding pressure is guaranteed to generate rated power.
The third stage is an operation stage in which the pressure of the high-pressure intake air is reduced from the second air-supplementing pressure point P2 to the critical pressure point P3, that is, an operation stage in which the pressure of the high-pressure intake air is lower than the second air-supplementing pressure point P2 and higher than the critical pressure point P3, and the third stage is a high-pressure intake air and first-stage air-supplementing and second-stage air-supplementing operation stage in which both the high-pressure regulating valve 4 and the first air-supplementing valve 5 are kept fully open, and the second air-supplementing valve 6 is opened and gradually increases in opening degree as the pressure of the high-pressure intake air is reduced. By correspondingly adjusting the opening of the second air compensating valve 6 according to the pressure reduction of the high-pressure air inlet, the second air compensating valve is made to gradually enter the second section turbine 2 through the second air compensating pipeline 400 and the second air compensating valve 6 to do work when the first section air compensating flow enters the first section turbine 1 through the first air compensating pipeline 300 and the fully-opened first air compensating valve 5 from the first air compensating port on the first section turbine 1 to do work, and the second section air compensating flow is gradually increased, so that the air turbine system running under wide sliding pressure can generate rated power. When the pressure of the high-pressure air intake reaches the critical pressure point P3, the through-flow pressure ratio in front of the first air supplementing port of the first stage turbine 1 reaches a critical value, and the opening of the second air supplementing valve 6 is not fully opened. The through-flow pressure ratio before the first air supply port of the first stage turbine 1 refers to the ratio of the pressure at the air inlet of the first stage turbine 1 to the pressure at the first air supply port on the first stage turbine 1. The threshold value of the through-flow pressure ratio before the first supply port of the first stage turbine 1 is determined according to whether or not blowing occurs.
The fourth stage is an operation stage in which the pressure of the high-pressure intake air is reduced from the critical pressure point P3 to the minimum pressure P4, that is, an operation stage in which the pressure of the high-pressure intake air is lower than the critical pressure point P3, the fourth stage is a low-pressure operation stage in which the high-pressure regulating valve 4 is kept fully open, the first air-compensating valve 5 is gradually closed so that the flow rate before the first air-compensating port of the first-stage turbine 1 is not lower than the critical value, and the second air-compensating valve 6 continues to gradually increase in opening degree as the pressure of the high-pressure intake air is reduced. The opening of the second air compensating valve 6 is correspondingly adjusted according to the pressure reduction of the high-pressure air inlet, so that the second-section air compensating flow is continuously and gradually increased, and the air turbine system running at the wide sliding pressure is ensured to generate rated power. When the pressure of the high-pressure inlet reaches the minimum pressure P4, the through-flow pressure ratio before the first air supplementing port of the first section turbine 1 and the through-flow pressure ratio after the first air supplementing port of the first section turbine 1 reach the critical value at the same time. The through-flow pressure ratio after the first air supply port of the first stage turbine 1 refers to the ratio of the pressure at the air inlet of the first stage turbine 1 to the pressure at the air outlet of the first stage turbine 1. The threshold value of the through-flow pressure ratio after the first air supply opening of the first stage turbine 1 is also determined according to whether or not air blowing occurs.
In a specific embodiment, taking a 300 MW-level compressed air energy storage power station as an example, an air turbine system requiring wide sliding pressure operation is designed to have output (rated power generation power) of 300MW in an air inlet pressure variation range of 17MPa-11MPa, the highest pressure P0 is 17MPa, the first pressure supplementing pressure point P1 is 15.09MPa, the second pressure supplementing pressure point P2 is 13.255MPa, the critical pressure point P3 is 12.2MPa, and the lowest pressure P4 is 11MPa. The air turbine system running under the wide sliding pressure operates according to the four-stage flexible operation mode of the air turbine system running under the wide sliding pressure in the embodiment, so that the air turbine system running under the wide sliding pressure can continuously and efficiently generate rated power in the operation process of gradually reducing the pressure of the whole high-pressure air inlet.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (6)
1. The utility model provides an air turbine system of wide smooth pressure operation, its characterized in that, including first section turbine (1), second section turbine (2) and to high pressure air intake pipeline (100) of high pressure air intake are carried to the air inlet of first section turbine (1), the exhaust of first section turbine (1) lets in do work in second section turbine (2), be equipped with first air compensating port on first section turbine (1), be equipped with the second air compensating port on second section turbine (2), be equipped with high pressure main valve (3) and high pressure regulating valve (4) that follow high pressure air intake air current direction and arrange in proper order on high pressure air intake pipeline (100), be equipped with between high pressure main valve (3) with high pressure regulating valve (4) and be connected high pressure air intake pipeline (100) with first air compensating pipeline (300) and be connected high pressure air intake pipeline (100) with second air compensating pipeline (400) of second air compensating port, be equipped with on first air compensating valve (300) second air compensating valve (400).
2. The wide-slip pressure operating air turbine system of claim 1, wherein the first stage turbine (1) and the second stage turbine (2) are cylinder-combined structures.
3. The wide-sliding-pressure operating air turbine system according to claim 1, wherein the first-stage turbine (1) and the second-stage turbine (2) are of a cylinder-separating structure, and an exhaust port of the first-stage turbine (1) is connected with an air inlet of the second-stage turbine (2) through a reheating pipeline (200).
4. A wide-slip pressure operating air turbine system according to claim 3, characterized in that a heat exchanger (7) is provided on the reheat line (200).
5. The wide-slip pressure operation air turbine system of claim 1, wherein during operation of the wide-slip pressure operation air turbine system, the pressure of the high-pressure intake air is gradually reduced from a highest pressure to a lowest pressure, and a difference between the highest pressure and the lowest pressure is not less than 4MPa.
6. The operation mode of the wide sliding pressure operation air turbine system according to any one of claims 1 to 5, wherein during the operation of the wide sliding pressure operation air turbine system, the pressure of the high pressure intake air gradually decreases from the highest pressure P0 to the lowest pressure P4 through the first pressure supplementing point P1, the second pressure supplementing point P2 and the critical pressure point P3 in sequence, and the operation mode of the wide sliding pressure operation air turbine system is as follows:
the high-pressure main valve (3) is kept fully opened;
in the operation stage that the pressure of the high-pressure air inlet is reduced from the highest pressure P0 to a first air supplementing pressure point P1, the high-pressure regulating valve (4) is opened and gradually increases the opening degree to be fully opened along with the pressure reduction of the high-pressure air inlet, and the first air supplementing valve (5) and the second air supplementing valve (6) are kept closed;
in the operation stage that the pressure of the high-pressure air inlet is reduced from a first air supplementing pressure point P1 to a second air supplementing pressure point P2, the high-pressure regulating valve (4) is kept fully opened, the first air supplementing valve (5) is opened and gradually increases the opening degree to be fully opened along with the pressure reduction of the high-pressure air inlet, and the second air supplementing valve (6) is kept closed;
in the operation stage that the pressure of the high-pressure air inlet is reduced from a second air supplementing pressure point P2 to a critical pressure point P3, the high-pressure regulating valve (4) and the first air supplementing valve (5) are kept fully opened, the second air supplementing valve (6) is opened and gradually increases the opening degree along with the reduction of the pressure of the high-pressure air inlet, and when the pressure of the high-pressure air inlet reaches the critical pressure point P3, the through-flow pressure ratio in front of the first air supplementing port of the first turbine (1) reaches a critical value;
in the operation stage that the pressure of the high-pressure air inlet is reduced from the critical pressure point P3 to the lowest pressure P4, the high-pressure regulating valve (4) is kept fully open, the first air supplementing valve (5) is gradually closed, so that the through-flow pressure ratio in front of the first air supplementing port of the first section turbine (1) is not lower than a critical value, and the second air supplementing valve (6) continuously increases the opening gradually along with the pressure reduction of the high-pressure air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310396107.1A CN116412002A (en) | 2023-04-13 | 2023-04-13 | Wide sliding pressure operation air turbine system and operation mode thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310396107.1A CN116412002A (en) | 2023-04-13 | 2023-04-13 | Wide sliding pressure operation air turbine system and operation mode thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116412002A true CN116412002A (en) | 2023-07-11 |
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ID=87054419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310396107.1A Pending CN116412002A (en) | 2023-04-13 | 2023-04-13 | Wide sliding pressure operation air turbine system and operation mode thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN116412002A (en) |
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2023
- 2023-04-13 CN CN202310396107.1A patent/CN116412002A/en active Pending
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